A welding device applied to new energy automobile lithium battery negative pole aluminum block riveting

Abstract

The present application relates to the technical field of welding, especially to a welding equipment applied to new energy automobile lithium battery negative pole aluminum block riveting, comprising a machine table, a welding head, a sliding table and a jig assembly; the sliding table is provided with a containing groove and a driving plate arranged in a lifting mode, the driving plate is elastically connected with a floating pin through a connecting shaft, and the machine table is provided with a driving groove; the jig assembly comprises a jig body, multiple clamping stations, a top plate and a clamping assembly; the mechanical linkage of the sliding table movement and the driving groove track is utilized, so that automatic clamping positioning of the workpiece, automatic loosening after welding and jacking demolding can be realized synchronously without an additional power source. The welding positioning precision is high, the workpiece jamming problem is effectively solved, the workpiece taking efficiency is high, the welding area damage is avoided, and the product yield and the production automation level are significantly improved.

Description

Technical Field

[0001] This invention relates to the field of welding technology, and in particular to a welding device for riveting aluminum blocks for the negative electrode of lithium batteries in new energy vehicles. Background Technology

[0002] With the rapid development of the new energy vehicle industry, lithium batteries, as a core component, directly affect the performance and safety of the entire vehicle through their manufacturing quality. In the lithium battery production process, the welding process after riveting the negative electrode aluminum block to the terminal post is one of the key technological steps. The welding quality directly affects the battery's conductivity, connection strength, and lifespan. To ensure welding position accuracy, tooling fixtures are typically used to precisely position and clamp the workpiece during the welding process.

[0003] Currently, most existing welding fixtures adopt an independent clamping structure design. Each clamping unit requires an independent power drive component such as a cylinder or motor to achieve the clamping and releasing of the workpiece. This structural design not only increases the overall cost and size of the equipment, but also requires a complex electrical control system to coordinate the timing of the various power components, resulting in a high equipment failure rate and high maintenance costs.

[0004] More significantly, in actual production, it was found that the workpiece easily gets stuck in the positioning groove after welding. The main reasons for this include: first, the large amount of heat generated during welding causes thermal expansion and deformation of the workpiece, resulting in changes in its dimensions after cooling; second, welding stress causes warping deformation of the workpiece; and third, to ensure positioning accuracy, the clearance between the positioning groove and the workpiece is usually set relatively small. These factors combined make it difficult to remove the workpiece after welding, often requiring operators to use screwdrivers or other tools to forcibly pry it out. This not only severely impacts removal efficiency and reduces production cycle time but also easily causes scratches, deformation, or even cracks in the welded area, leading to an increased product defect rate.

[0005] Therefore, there is a need for welding equipment that can reliably position the workpiece during the welding process and facilitate separation of the workpiece from the fixture after welding. Summary of the Invention

[0006] The purpose of this invention is to overcome the above-mentioned shortcomings and provide a welding device for riveting aluminum blocks of lithium-ion batteries in new energy vehicles.

[0007] To achieve the above objectives, the specific solution of the present invention is as follows: A welding device for riveting aluminum blocks of negative electrode in lithium batteries for new energy vehicles includes a machine base, a slide table slidably mounted on the machine base, and a fixture assembly detachably mounted on the top of the slide table. A receiving groove is provided in the middle of the top surface of the slide table. A drive plate is raised and lowered in the receiving groove. A connecting shaft is provided at both ends of the drive plate. The slide table is provided with a first strip hole extending vertically through each connecting shaft. The connecting shaft is movably inserted in the first strip hole. A floating pin is elastically floating at the end of the connecting shaft. The machine tool is provided with drive grooves on both sides of the slide table. The floating pin is movably embedded in the drive groove. The drive plate can move up and down in the receiving groove with the cooperation of the floating pin and the drive groove. The fixture assembly includes a fixture body. The top surface of the fixture body has multiple sets of clamping stations corresponding to the receiving slot area. Each set of clamping stations includes multiple spaced-apart positioning slots and a lifting slot communicating with each positioning slot. A top plate for cooperating with a drive plate is raised and lowered in the lifting slot. Each positioning slot has clamping components on both sides that are connected to the top plate for transmission, so that the clamping components clamp or release the workpiece in the positioning slot under the drive of the top plate.

[0008] Furthermore, the drive groove of the present invention includes a first inclined section and a first horizontal section, one end of the first inclined section being connected to one end of the first horizontal section; when the floating pin moves from the first inclined section to the first horizontal section, the drive plate moves upward and lifts the top plate of each set of clamping stations.

[0009] Furthermore, the drive groove of the present invention further includes a second inclined section, a second horizontal section and a first vertical section; one end of the second inclined section is connected to the other end of the first horizontal section, one end of the second horizontal section is connected to the other end of the second inclined section, one end of the first vertical section is connected to the other end of the second horizontal section, and the other end of the first vertical section is connected to the other end of the second horizontal section; the second horizontal section is located above the first horizontal section along the height direction of the machine platform.

[0010] Furthermore, each clamping component of the present invention includes a first clamping block, a second clamping block, and two sliders. The opposing sides of the first clamping block and the second clamping block are respectively hinged to the two sliders. The fixture body is provided with a sliding groove for each slider, and the slider is slidably disposed in the corresponding sliding groove along the length direction of the positioning groove. The groove wall of the sliding groove is provided with a driving hole. The slider is provided with an avoidance notch, and the two sides of the avoidance notch are respectively provided with a second strip hole extending along the thickness direction of the positioning groove. The top plate is provided with a drive arm for each slider of each clamping component. The drive arm is raised and lowered in the slide groove and located in the clearance notch. The drive arm is provided with a third strip hole extending along the length of the positioning groove. A pin is movably inserted in the third strip hole. The two ends of the pin pass through the second strip hole in sequence and are movably embedded in the drive hole to convert the raising and lowering motion of the drive arm into the sliding motion of the slider along the length of the positioning groove.

[0011] Furthermore, the driving hole of the present invention includes a first driving section that is inclined. When the floating pin transitions from the first inclined section to the first horizontal section, the pin moves from bottom to top along the first driving section, causing the pin to be displaced in the length direction of the positioning groove, thereby pushing the slider to slide along the length direction of the positioning groove by cooperating with the second strip hole.

[0012] Furthermore, the driving hole further includes an inclined second driving segment and a second vertical segment, the lower end of the second driving segment being connected to the upper end of the first driving segment, and the lower end of the second vertical segment being connected to the upper end of the second driving segment; the inclination direction of the second driving segment is opposite to the inclination direction of the first driving segment. When the pin moves along the second drive section, the pin pushes the slider to slide in the opposite direction along the length of the positioning groove by cooperating with the second strip hole; when the pin moves along the second vertical section, the pin pushes the top plate to protrude out of the bottom of the positioning groove by cooperating with the third strip hole.

[0013] Furthermore, in this invention, a baffle is elastically floatingly connected inside the second strip-shaped hole; the baffle is in movable contact with the outer peripheral wall of the pin.

[0014] Furthermore, the present invention provides a guide cylinder in the middle of the side of the first clamping block facing the second clamping block, and a guide shaft in the middle of the side of the second clamping block facing the first clamping block, the guide shaft being movably inserted into the guide cylinder.

[0015] Furthermore, the top plate is provided with a boss that moves downward through the fixture body in the middle; the boss is used to movably abut against the top surface of the drive plate.

[0016] Furthermore, the top surface of the slide is provided with positioning posts at intervals, and the fixture body is provided with positioning holes at intervals corresponding to the positioning posts, and the positioning posts are movably inserted into the corresponding positioning holes.

[0017] The beneficial effects of this invention are as follows: Through the mechanical linkage design of the slide table movement and the drive groove trajectory, this invention eliminates the need for additional independent cylinders or motor drives, simultaneously achieving a series of actions such as automatic workpiece clamping and positioning, automatic release after welding, and lifting and unloading. This simplifies the equipment structure, reduces manufacturing and maintenance costs, and improves equipment operational reliability. During welding, stable clamping is achieved through mechanical linkage, with constant and uniform clamping force and high workpiece positioning accuracy, effectively preventing workpiece displacement during welding and ensuring consistent welding position accuracy and quality. After welding, the workpiece is automatically lifted and separated without manual external prying, improving part removal efficiency and avoiding damage to the welding area caused by external force during part removal. This significantly improves the yield and automation level of welding production, effectively solving the problem of workpiece jamming with the positioning groove after welding. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the welding equipment of the present invention; Figure 2 This is a cross-sectional schematic diagram of the welding equipment of the present invention; Figure 3 yes Figure 2 A magnified view of a section at point A in the middle; Figure 4 This is a cross-sectional schematic diagram of the machine tool of the present invention; Figure 5 yes Figure 4 A magnified view of a section at point B in the middle; Figure 6 yes Figure 4 A magnified view of a section at point C; Figure 7 This is a schematic diagram of the slide table of the present invention; Figure 8 yes Figure 7 A magnified view of a section at point D; Figure 9 This is a schematic diagram of the structure of the fixture assembly of the present invention; Figure 10 This is a cross-sectional schematic diagram of the fixture assembly of the present invention; Figure 11 yes Figure 10 A magnified view of a section at point E in the middle; Figure 12 This is a schematic diagram of the structure of the top plate and various clamping components in the clamping station of the present invention; Figure 13 yes Figure 12 A magnified view of a section at point F in the middle; Figure 14 This is a schematic diagram of the top plate of the present invention; Figure 15 This is a schematic diagram of the structure of the clamping component of the present invention; Figure 16 This is a cross-sectional schematic diagram of the fixture body of the present invention; Figure 17 yes Figure 16 A magnified view of a section at point G in the middle; Explanation of reference numerals in the attached drawings: 1. Machine base; 11. First inclined section; 12. First horizontal section; 13. Second inclined section; 14. Second horizontal section; 15. First vertical section; 2. Welding head; 3. Slide table; 31. Drive plate; 32. Connecting shaft; 33. First strip hole; 34. Floating pin; 35. Positioning column; 41. Fixture body; 411. Positioning hole; 42. Positioning groove; 43. Lifting groove; 44. Top plate; 441. Drive arm; 442. Boss; 443. Third strip hole; 444. Pin; 45. Clamping assembly; 451. First clamping block; 4511. Guide cylinder; 452. Second clamping block; 4521. Guide shaft; 453. Slider; 4531. Clearance notch; 4532. Second strip hole; 4533. Baffle; 454. Connecting rod; 46. Slide groove; 461. First drive section; 462. Second drive section; 463. Second vertical section. Detailed Implementation

[0019] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments, but this is not to limit the scope of the invention to this.

[0020] like Figures 1 to 17 As shown, the welding equipment applied to the riveting of aluminum blocks for the negative electrode of lithium batteries in new energy vehicles in this embodiment includes a machine base 1, a welding head 2 slidably disposed on the machine base 1 in a first direction, a slide table 3 slidably disposed on the machine base 1 in a second direction and located below the welding head 2, and a fixture assembly detachably disposed on the top of the slide table 3; wherein, the welding head 2 is a laser welding head 2. A receiving groove is provided in the middle of the top surface of the slide table 3. A drive plate 31 is raised and lowered in the receiving groove. A connecting shaft 32 is provided at both ends of the drive plate 31. Preferably, the connecting shaft 32 and the drive plate 31 are integrally formed, which makes the structure more reliable. The slide table 3 is provided with a first strip hole 33 extending in the vertical direction for each connecting shaft 32. The connecting shaft 32 is movably inserted in the first strip hole 33. A floating pin 34 is elastically floating at the end of the connecting shaft 32. The machine base 1 is provided with drive grooves on both sides of the slide table 3. The floating pin 34 is movably embedded in the drive groove. The drive plate 31 can move up and down in the receiving groove with the cooperation of the floating pin 34 and the drive groove. The fixture assembly includes a fixture body 41. The top surface of the fixture body 41 has multiple clamping stations corresponding to the receiving groove area. The number of clamping stations can be freely set according to actual design requirements, such as four clamping stations. Each clamping station includes multiple spaced and parallel positioning grooves 42 and a lifting groove 43 connected to each positioning groove 42. The number of clamping stations in each group can be set according to actual design requirements, such as four positioning grooves 42 in each group. The positioning grooves 42 are used to place the workpiece to be welded after being riveted to the negative electrode aluminum block and the electrode post. The lifting groove 43 is located in the middle of the positioning groove 42. A top plate 44 for cooperating with the drive plate 31 is raised and lowered in the lifting groove 43. Each positioning groove 42 has clamping components 45 on both sides that are connected to the top plate 44 for transmission, so that the clamping components 45 clamp or release the workpiece in the positioning groove 42 under the drive of the top plate 44.

[0021] It should be noted that the first direction is the length direction of machine 1, the second direction is the width direction of machine 1, and the vertical direction is the height direction of machine 1.

[0022] Specifically, in practical application, the welding equipment used in this embodiment for riveting aluminum negative electrode blocks in lithium-ion batteries for new energy vehicles first places the workpieces riveted to the electrode posts in each positioning groove 42 for initial positioning. Then, the fixture assembly is installed on the slide table 3. Next, the slide table 3 moves downwards towards the welding head 2 along the second direction. During the movement of the slide table 3, the floating pin 34 moves along the trajectory of the drive groove. Due to the height-varying trajectory design of the drive groove, the floating pin 34 drives the drive plate 31 to rise upwards in the receiving groove through the connecting shaft 32. While the drive plate 31 rises upwards, it pushes the top plate 44 upwards. During the upward movement of the top plate 44, it drives each clamping assembly 45 to move synchronously, clamping and fixing the workpieces in the positioning grooves 42, thus achieving precise positioning of the workpieces. At this time, the slide table 3 moves directly below the welding head 2, and the welding head 2 moves along the first direction to perform laser welding operations on the welding positions of each workpiece in sequence.

[0023] After welding is completed, the slide table 3 moves out of the welding station along the second direction. During the movement of the slide table 3, the floating pin 34 moves along the trajectory of the drive groove, causing the top plate 44 to drive the clamping assembly 45 to release the workpiece.

[0024] In this embodiment, the mechanical linkage between the movement of the slide table 3 and the trajectory of the drive groove eliminates the need for additional independent cylinders or motor drives, thus enabling simultaneous automatic clamping and positioning of the workpiece and automatic release after welding.

[0025] This embodiment describes a welding device applied to the riveting of aluminum blocks for the negative electrode of lithium batteries in new energy vehicles, such as... Figures 4 to 6As shown, the drive groove includes a first inclined section 11 and a first horizontal section 12, with one end of the first inclined section 11 connected to one end of the first horizontal section 12. When the floating pin 34 moves from the first inclined section 11 to the first horizontal section 12, the drive plate 31 moves upward and lifts the top plate 44 of each clamping station. Specifically, the first horizontal section 12 extends horizontally along the second direction. When the slide table 3 begins to move towards the welding station, the floating pin 34 first enters the first inclined section 11 of the drive groove. As the first inclined section 11 gradually rises along the moving direction of the slide table 3, the floating pin 34 gradually rises under the guidance of the first inclined section 11, driving the drive plate 31 to move smoothly upward through the connecting shaft 32. During the upward movement of the drive plate 31, it continuously pushes the top plate 44, causing the top plate 44 to rise synchronously and drive the clamping assembly 45 to gradually clamp the workpiece. When the floating pin 34 moves to the end of the first inclined section 11 and enters the first horizontal section 12, the drive plate 31 maintains its current height. At this time, the clamping force of the clamping assembly 45 on the workpiece reaches its maximum value and remains stable. The slide table 3 continues to move to the welding station for welding operations, and the floating pin 34 moves smoothly along the trajectory of the first horizontal section 12.

[0026] This embodiment uses a progressive trajectory design in the first inclined section 11 to make the lifting and lowering motion of the drive plate 31 more stable, avoiding impact and vibration during the clamping process and ensuring a stable and reliable workpiece clamping process. The first horizontal section 12 provides a stable clamping and holding stage, ensuring that the clamping force remains constant throughout the welding process, preventing workpiece displacement during welding, and effectively ensuring welding accuracy. At the same time, the two-stage trajectory design enables precise matching between the clamping action and the travel of the slide table 3, realizing synchronous control of "moving to the position and clamping in place".

[0027] Optionally, the end of the connecting shaft 32 is provided with a first receiving hole along its axis, and a first spring is provided in the first receiving hole. One end of the floating pin 34 is movably inserted into the first receiving hole and abuts against the first spring. The other end of the floating pin 34 tends to contact the bottom of the drive groove under the elastic force of the first spring.

[0028] This embodiment describes a welding device applied to the riveting of aluminum blocks for the negative electrode of lithium batteries in new energy vehicles, such as... Figures 4 to 6 As shown, the drive groove also includes a second inclined section 13, a second horizontal section 14, and a first vertical section 15; one end of the second inclined section 13 is connected to the other end of the first horizontal section 12, one end of the second horizontal section 14 is connected to the other end of the second inclined section 13, one end of the first vertical section 15 is connected to the other end of the second horizontal section 14, and its other end is connected to the other end of the first inclined section 11; the second horizontal section 14 is located above the first horizontal section 12 along the height direction of the machine base 1. Specifically, the second horizontal section 14 extends horizontally along a second direction.

[0029] After welding is completed, the slide table 3 continues to move in the second direction, causing the floating pin 34 to enter the second inclined section 13 from the first horizontal section 12. The second inclined section 13 continues to rise along the moving direction of the slide table 3, and the floating pin 34 continues to rise along the second inclined section 13, driving the drive plate 31 to continue to move upward, so that the top plate 44 obtains a higher lifting height. At this time, the top plate 44 drives the clamping assembly 45 to release the welded workpiece. After the clamping assembly 45 releases the workpiece, the top plate 44 continues to lift and protrudes from the bottom of the positioning groove 42, thereby lifting the welded workpiece upward until the floating pin 34 enters the second horizontal section 14 from the second inclined section 13. The drive plate 31 remains in the highest lifting position. Plate 44 pushes the workpiece out of the positioning groove 42, and the workpiece is separated from the bottom of the positioning groove 42. Then, the slide table 3 drives the fixture assembly to move in the opposite direction in the second direction, and the floating pin 34 moves along the trajectory of the second horizontal section 14. When the slide table 3 continues to move to the loading and unloading station, the floating pin 34 enters the first vertical section 15 from the second horizontal section 14. At this time, the floating pin 34 quickly falls back to the initial height along the first vertical section 15, that is, the floating pin 34 returns from the first vertical section 15 to the first inclined section 11. The drive plate 31 and the top plate 44 are then reset, ready for the next round of loading and unloading operations. At this time, the entire fixture assembly can be removed from the slide table 3 to replace the next fixture assembly for welding operations.

[0030] This embodiment achieves a complete work cycle of "progressive clamping - stable clamping - continued lifting and unloading - maintaining unloading state - rapid reset" through a five-segment drive groove trajectory design, integrating the three processes of clamping, welding, and unloading into the reciprocating stroke of the slide table 3; the height of the second horizontal segment 14 is higher than that of the first horizontal segment 12, ensuring that the lifting height during unloading is greater than that during clamping, thus guaranteeing the action sequence of clamping before unloading from a mechanical structure perspective and avoiding action interference; the first vertical segment 15 achieves rapid reset, shortening auxiliary time and improving the overall operating efficiency of the equipment.

[0031] At the same time, it effectively solves the problem of the workpiece getting stuck in the positioning groove 42 after welding; the workpiece is reliably clamped during the welding process, ensuring the welding position accuracy; after welding, the workpiece is automatically released and lifted and separated, without the need for manual external force to pry it off, which not only improves the efficiency of part removal, but also avoids damage to the welding area caused by external force to remove the part, and significantly improves the yield and automation level of welding production.

[0032] This embodiment describes a welding device applied to the riveting of aluminum blocks for the negative electrode of lithium batteries in new energy vehicles, such as... Figures 9 to 17As shown, each clamping assembly 45 includes a first clamping block 451, a second clamping block 452, and two sliders 453. The opposing sides of the first clamping block 451 and the second clamping block 452 are respectively hinged to the two sliders 453 with connecting rods 454. The fixture body 41 is provided with a sliding groove 46 corresponding to each slider 453. The slider 453 is slidably disposed in the corresponding sliding groove 46 along the length direction of the positioning groove 42. The groove wall of the sliding groove 46 is provided with a driving hole. The slider 453 is provided with an avoidance notch 4531. The two sides of the avoidance notch 4531 are respectively provided with second strip holes 4532 extending along the thickness direction of the positioning groove 42.

[0033] The top plate 44 is provided with a drive arm 441 corresponding to the slider 453 of each clamping component 45. The drive arm 441 is raised and lowered in the slide groove 46 and located in the clearance notch 4531. The drive arm 441 is provided with a third strip hole 443 extending along the length direction of the positioning groove 42. A pin 444 is movably inserted in the third strip hole 443. The two ends of the pin 444 pass through the second strip hole 4532 in sequence and are movably embedded in the drive hole, so as to convert the raising and lowering motion of the drive arm 441 into the sliding motion of the slider 453 along the length direction of the positioning groove 42.

[0034] When the top plate 44 is pushed upward by the drive plate 31, the top plate 44 drives each drive arm 441 to move upward synchronously. The drive arm 441 drives the pin 444 to move upward through the third strip hole 443. While moving upward, the pin 444 moves along the trajectory of the drive hole. Due to the specific trajectory design of the drive hole, the pin 444 generates horizontal displacement while moving vertically. The pin 444 drives the slider 453 to slide along the slide groove 46 through the second strip hole 4532. When the slider 453 slides, it pushes the first clamping block 451 and the second clamping block 452 to move apart through the connecting rod 454, thereby clamping the workpiece in the positioning groove 42 through the first clamping block 451 and the second clamping block 452 of the two adjacent clamping assemblies 45. As the top plate 44 continues to move upward, the drive arm 441 drives the pin 444 to continue moving upward. Under the guiding and limiting action of the drive hole, the pin 444 generates a horizontal reverse displacement while moving vertically. The pin 444 drives the slider 453 to slide in the opposite direction, and pulls the first clamping block 451 and the second clamping block 452 to move towards each other through the connecting rod 454. At this time, the first clamping block 451 and the second clamping block 452 of the two adjacent clamping components 45 release the welded workpiece. After the workpiece is released, the top plate 44 continues to move upward under the lifting of the drive plate 31, thereby protruding from the bottom of the positioning groove 42, which will lift the welded workpiece in the positioning groove 42 so that the subsequent workpiece can be unloaded.

[0035] This embodiment cleverly transforms the vertical lifting motion of the top plate 44 into the horizontal sliding motion of the slider 453 through the cooperation of the pin 444, the strip hole, and the drive hole. Then, through the connecting rod 454, it is transformed into the clamping and releasing motion of the clamping block, realizing a purely mechanical motion conversion without any electrical control components. Moreover, the transmission structure is compact, has high transmission efficiency, and good action synchronization. Multiple clamping stations can achieve synchronous clamping and releasing actions. In addition, the design of the clearance notch 4531 makes the structure more compact and effectively reduces the overall volume of the fixture.

[0036] This embodiment describes a welding device applied to the riveting of aluminum blocks for the negative electrode of lithium batteries in new energy vehicles, such as... Figure 17 As shown, the driving hole includes an inclined first driving section 461. When the floating pin 34 transitions from the first inclined section 11 to the first horizontal section 12, the pin 444 moves upward along the first driving section 461, causing the pin 444 to displace in the length direction of the positioning groove 42. This displacement, in conjunction with the second strip hole 4532, pushes the slider 453 to slide along the length direction of the positioning groove 42. During the clamping stage, the pin 444 moves upward along the first driving section 461. Due to the inclined arrangement of the first driving section 461, the pin 444, while rising vertically, also generates a horizontal displacement along the inclined direction of the first driving section 461. This horizontal displacement is transmitted to the slider 453 through the hole wall of the second strip hole 4532, pushing the slider 453 to slide along the length direction of the positioning groove 42. When the slider 453 slides, the horizontal motion is converted into a separation clamping motion of the first clamping block 451 and the second clamping block 452 through the connecting rod 454, applying a stable clamping force to the workpiece. When the pin 444 moves to the top of the first drive section 461, the slider 453 moves to the end of the clamping stroke, and the workpiece is firmly clamped.

[0037] This embodiment controls the speed and magnitude of the clamping action through the inclined trajectory design of the first drive section 461; the inclined angle design can adjust the ratio of clamping stroke to lifting height as needed to achieve the optimal lever arm ratio; the first drive section 461 corresponds to the first inclined section 11 of the drive groove, ensuring that the series of actions of sliding table 3 moving, drive plate 31 rising and falling, pin shaft 444 moving, slider 453 sliding, and clamping block clamping are completely synchronized, realizing precise control of mechanical linkage and ensuring smooth and reliable clamping action.

[0038] This embodiment describes a welding device applied to the riveting of aluminum blocks for the negative electrode of lithium batteries in new energy vehicles, such as... Figure 17As shown, the drive hole also includes a second drive section 462 and a second vertical section 463 arranged at an inclination. The lower end of the second drive section 462 is connected to the upper end of the first drive section 461, and the lower end of the second vertical section 463 is connected to the upper end of the second drive section 462. The inclination direction of the second drive section 462 is opposite to that of the first drive section 461. When the pin 444 moves along the second drive section 462, the pin 444 pushes the slider 453 to slide in the opposite direction along the length of the positioning groove 42 by cooperating with the second strip hole 4532. When the pin 444 moves along the second vertical section 463, the pin 444 pushes the top plate 44 to protrude from the bottom of the positioning groove 42 by cooperating with the third strip hole 443.

[0039] After welding, the material removal stage begins. Pin 444 first moves upwards along the second drive section 462. Since the inclination direction of the second drive section 462 is opposite to that of the first drive section 461, pin 444 generates a horizontal displacement in the opposite direction to the clamping stage, causing slider 453 to slide in the opposite direction along the length of the positioning groove 42. Slider 453, through connecting rod 454, pulls the first clamping block 451 and the second clamping block 452 to move towards each other, thus completely releasing the workpiece. When pin 444 moves to the top of the second drive section 462, it enters the first... When the second vertical segment 463 is reached, the slider 453 has returned to the released position, and the clamping block is fully opened. At this time, the drive arm 441 drives the pin 444 to continue to move vertically upward along the second vertical segment 463. Since the second vertical segment 463 is a purely vertical trajectory, the pin 444 no longer produces horizontal displacement, so that the first clamping block 451 and the second clamping block 452 remain in the released state. The top plate 44 continues to move upward under the push of the drive plate 31 and protrudes from the bottom of the positioning groove 42, thereby ejecting the welded workpiece in the positioning groove 42.

[0040] This embodiment utilizes a three-segment trajectory design for the drive hole, thereby achieving the action sequence of "first clamping and positioning - complete release - then lifting and unloading" by cooperating with the drive hole using the pin 444. From a mechanical structure perspective, this effectively avoids the risk of jamming and scratching caused by lifting the workpiece before the clamping block is fully released. The second drive segment 462 is tilted in the opposite direction to the first drive segment 461, ensuring that the release and clamping actions are executed by the slider 453, resulting in a simple and reliable structure. The second vertical segment 463 achieves a pure lifting motion. At this time, the clamping block is fully open, and there is no interference during the lifting process, ensuring that the workpiece can smoothly detach from the positioning groove 42, thus solving the jamming problem that occurs during unloading.

[0041] This embodiment describes a welding device applied to the riveting of aluminum blocks for the negative electrode of lithium batteries in new energy vehicles, such as... Figures 12 to 15As shown, a baffle 4533 is elastically floating within the second strip-shaped hole 4532; the baffle 4533 movably abuts against the outer peripheral wall of the pin 444. Specifically, in this embodiment, the elastically floating baffle 4533 allows the pin 444 to push the slider 453 horizontally through the baffle 4533 when the pin 444 moves along the first drive section 461, thereby driving the first clamping block 451 and the second clamping block 452 to clamp the workpiece. When the workpiece has tolerances or is clamped for workpieces of different sizes, after the first clamping block 451 and the second clamping block 452 clamp the workpiece, the pin 444 continues to move along the trajectory of the first drive section 461. At this time, the pin 444 presses the baffle 4533, causing the baffle 4533 to overcome the elastic effect and slide relative to the slider 453 within the second strip-shaped hole 4532, thereby adapting to the clamping and positioning of workpieces of different sizes.

[0042] Optionally, the second accommodating hole 4532 has a second receiving hole in its hole wall, and a second spring is provided in the second receiving hole. A profiled shaft protrudes from the middle of the side of the baffle 4533 facing away from the pin 444. The profiled shaft is movably inserted into the second receiving hole and cooperates with the profiled surface of the hole wall of the second receiving hole to restrict the rotational freedom of the baffle 4533. The profiled shaft also abuts against the second spring, so that the side of the baffle 4533 facing the pin 444 remains in contact with the outer peripheral wall of the pin 444.

[0043] This embodiment describes a welding device applied to the riveting of aluminum blocks for the negative electrode of lithium batteries in new energy vehicles, such as... Figures 11 to 13 ,as well as Figure 15 As shown, a guide cylinder 4511 is provided in the middle of the side of the first clamping block 451 facing the second clamping block 452, and a guide shaft 4521 is provided in the middle of the side of the second clamping block 452 facing the first clamping block 451. The guide shaft 4521 is movably inserted into the guide cylinder 4511. In this embodiment, by setting the guide cylinder 4511 and the guide shaft 4521 to cooperate, the first clamping block 451 and the second clamping block 452 are provided with guidance and limitation, making the movement of the clamping blocks more stable and the clamping positioning more reliable.

[0044] This embodiment describes a welding device applied to the riveting of aluminum blocks for the negative electrode of lithium batteries in new energy vehicles, such as... Figure 10 and Figure 12 As shown, a boss 442 is provided in the middle of the top plate 44, which moves downward through the fixture body 41; the boss 442 is used to move and abut against the top surface of the drive plate 31. When the drive plate 31 is raised, the top surface of the drive plate 31 first contacts the lower end surface of the boss 442, and the lifting force is transmitted to the top plate 44 through the boss 442. The drive plate 31 continues to rise, which can push the top plate 44 to move upward as a whole; when the drive plate 31 falls back down, the boss 442 falls synchronously with the top plate 44, and always maintains contact with the top surface of the drive plate 31.

[0045] This embodiment describes a welding device applied to the riveting of aluminum blocks for the negative electrode of lithium batteries in new energy vehicles, such as... Figure 2 and Figure 7 As shown, the top surface of the slide 3 is provided with positioning posts 35 at intervals, and the fixture body 41 is provided with positioning holes 411 corresponding to the positioning posts 35 at intervals. The positioning posts 35 are movably inserted into the corresponding positioning holes 411. When installing the fixture assembly, the positioning holes 411 of the fixture body 41 are aligned with the positioning posts 35 of the slide 3 and placed downwards. The positioning posts 35 are inserted into the positioning holes 411, achieving precise positioning between the fixture body 41 and the slide 3. When changing to fixture assemblies of different specifications, simply lift the fixture body 41 upwards to separate the positioning posts 35 from the positioning holes 411 for quick disassembly and replacement.

[0046] The above description is only a preferred embodiment of the present invention. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of this patent application are included within the protection scope of this patent application.

Claims

1. A welding device applied to the riveting of aluminum blocks for the negative electrode of lithium batteries in new energy vehicles, characterized in that, Includes a machine base, a slide table slidably mounted on the machine base, and a fixture assembly detachably mounted on top of the slide table; A receiving groove is provided in the middle of the top surface of the slide table. A drive plate is raised and lowered in the receiving groove. A connecting shaft is provided at both ends of the drive plate. The slide table is provided with a first strip hole extending vertically through each connecting shaft. The connecting shaft is movably inserted in the first strip hole. A floating pin is elastically floating at the end of the connecting shaft. The machine tool is provided with drive grooves on both sides of the slide table. The floating pin is movably embedded in the drive groove. The drive plate can move up and down in the receiving groove with the cooperation of the floating pin and the drive groove. The fixture assembly includes a fixture body. The top surface of the fixture body has multiple sets of clamping stations corresponding to the receiving slot area. Each set of clamping stations includes multiple spaced-apart positioning slots and a lifting slot communicating with each positioning slot. A top plate for cooperating with a drive plate is raised and lowered in the lifting slot. Each positioning slot has clamping components on both sides that are connected to the top plate for transmission, so that the clamping components clamp or release the workpiece in the positioning slot under the drive of the top plate.

2. The welding equipment according to claim 1, applied to the riveting of aluminum blocks for the negative electrode of lithium batteries in new energy vehicles, is characterized in that, The drive groove includes a first inclined section and a first horizontal section, with one end of the first inclined section connected to one end of the first horizontal section; when the floating pin moves from the first inclined section to the first horizontal section, the drive plate moves upward and lifts the top plate of each clamping station.

3. The welding equipment according to claim 2, applied to the riveting of aluminum blocks for the negative electrode of lithium batteries in new energy vehicles, is characterized in that... The drive slot further includes a second inclined section, a second horizontal section, and a first vertical section; one end of the second inclined section is connected to the other end of the first horizontal section, one end of the second horizontal section is connected to the other end of the second inclined section, one end of the first vertical section is connected to the other end of the second horizontal section, and the other end of the first vertical section is connected to the other end of the first inclined section; the second horizontal section is located above the first horizontal section along the height direction of the machine platform.

4. The welding equipment according to claim 3, applied to the riveting of aluminum blocks for the negative electrode of lithium batteries in new energy vehicles, is characterized in that... Each clamping assembly includes a first clamping block, a second clamping block, and two sliders. The first clamping block and the second clamping block are respectively hinged to the two sliders on opposite sides. The fixture body is provided with a sliding groove for each slider. The slider is slidably disposed in the corresponding sliding groove along the length direction of the positioning groove. The groove wall is provided with a driving hole. The slider is provided with an avoidance notch. The two sides of the avoidance notch are respectively provided with a second strip hole extending along the thickness direction of the positioning groove. The top plate is provided with a drive arm for each slider of each clamping component. The drive arm is raised and lowered in the slide groove and located in the clearance notch. The drive arm is provided with a third strip hole extending along the length of the positioning groove. A pin is movably inserted in the third strip hole. The two ends of the pin pass through the second strip hole in sequence and are movably embedded in the drive hole to convert the raising and lowering motion of the drive arm into the sliding motion of the slider along the length of the positioning groove.

5. The welding equipment according to claim 4, applied to the riveting of aluminum blocks for the negative electrode of lithium batteries in new energy vehicles, is characterized in that... The drive hole includes an inclined first drive section. When the floating pin transitions from the first inclined section to the first horizontal section, the pin moves from bottom to top along the first drive section, causing the pin to be displaced in the length direction of the positioning groove. This, in turn, cooperates with the second strip hole to push the slider to slide along the length direction of the positioning groove.

6. The welding equipment according to claim 5, applied to the riveting of aluminum blocks for the negative electrode of lithium batteries in new energy vehicles, is characterized in that... The drive hole further includes an inclined second drive section and a second vertical section. The lower end of the second drive section is connected to the upper end of the first drive section, and the lower end of the second vertical section is connected to the upper end of the second drive section. The inclination direction of the second drive section is opposite to that of the first drive section. When the pin moves along the second drive section, the pin pushes the slider to slide in the opposite direction along the length of the positioning groove by cooperating with the second strip hole; when the pin moves along the second vertical section, the pin pushes the top plate to protrude out of the bottom of the positioning groove by cooperating with the third strip hole.

7. The welding equipment according to claim 4, applied to the riveting of aluminum blocks for the negative electrode of lithium batteries in new energy vehicles, is characterized in that... A baffle is elastically floating inside the second strip-shaped hole; the baffle is in movable contact with the outer peripheral wall of the pin.

8. The welding equipment according to claim 4, applied to the riveting of aluminum blocks for the negative electrode of lithium batteries in new energy vehicles, is characterized in that... The first clamping block has a guide cylinder in the middle of the side facing the second clamping block, and the second clamping block has a guide shaft in the middle of the side facing the first clamping block. The guide shaft is movably inserted into the guide cylinder.

9. The welding equipment according to any one of claims 1 to 8, applied to the riveting of aluminum blocks for the negative electrode of lithium batteries in new energy vehicles, characterized in that, The top plate has a boss in the middle that moves downward through the fixture body; the boss is used to movably abut against the top surface of the drive plate.

10. The welding equipment according to any one of claims 1 to 8, applied to the riveting of aluminum blocks for the negative electrode of lithium batteries in new energy vehicles, characterized in that, The top surface of the slide is provided with positioning posts at intervals, and the fixture body is provided with positioning holes at intervals corresponding to the positioning posts. The positioning posts are movably inserted into the corresponding positioning holes.

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